Sequence matters or you'll iterate.
1. Relief....truss rod
2. Relief....nut height or channel depth (if string thickness related)
3. Intonation....bridge adjustment for string length = around 12th fret
3 Action....bridge saddle height for action
You have that order wrong, you do action before intonation, if you intonate it, then change the action, the intonation goes back out of whack.